#ifndef __VSF_LINUX_NETINET_IP_ICMP_H__
#define __VSF_LINUX_NETINET_IP_ICMP_H__

#include "shell/sys/linux/vsf_linux_cfg.h"

#if VSF_LINUX_CFG_RELATIVE_PATH == ENABLED
#   include "../sys/types.h"
#   include "./in.h"
#   include "./ip.h"
#else
#   include <sys/types.h>
#   include <netinet/in.h>
#   include <netinet/ip.h>
#endif
// for stdint.h
#include "utilities/vsf_utilities.h"

#ifdef __cplusplus
extern "C" {
#endif

struct icmphdr {
    uint8_t                     type;
    uint8_t                     code;
    uint16_t                    checksum;
    union {
        struct {
            uint16_t            id;
            uint16_t            sequence;
        } echo;
        uint32_t                gateway;
        struct {
            uint16_t            __unused;
            uint16_t            mtu;
        } frag;
    } un;
};

#define ICMP_ECHOREPLY          0
#define ICMP_DEST_UNREACH       3
#define ICMP_SOURCE_QUENCH      4
#define ICMP_REDIRECT           5
#define ICMP_ECHO               8
#define ICMP_TIME_EXCEEDED      11
#define ICMP_PARAMETERPROB      12
#define ICMP_TIMESTAMP          13
#define ICMP_TIMESTAMPREPLY     14
#define ICMP_INFO_REQUEST       15
#define ICMP_INFO_REPLY         16
#define ICMP_ADDRESS            17
#define ICMP_ADDRESSREPLY       18
#define NR_ICMP_TYPES           18

#define ICMP_NET_UNREACH        0
#define ICMP_HOST_UNREACH       1
#define ICMP_PROT_UNREACH       2
#define ICMP_PORT_UNREACH       3
#define ICMP_FRAG_NEEDED        4
#define ICMP_SR_FAILED          5
#define ICMP_NET_UNKNOWN        6
#define ICMP_HOST_UNKNOWN       7
#define ICMP_HOST_ISOLATED      8
#define ICMP_NET_ANO            9
#define ICMP_HOST_ANO           10
#define ICMP_NET_UNR_TOS        11
#define ICMP_HOST_UNR_TOS       12
#define ICMP_PKT_FILTERED       13
#define ICMP_PREC_VIOLATION     14
#define ICMP_PREC_CUTOFF        15
#define NR_ICMP_UNREACH         15

#define ICMP_REDIR_NET          0
#define ICMP_REDIR_HOST         1
#define ICMP_REDIR_NETTOS       2
#define ICMP_REDIR_HOSTTOS      3

#define ICMP_EXC_TTL            0
#define ICMP_EXC_FRAGTIME       1

struct icmp_ra_addr {
    uint32_t                    ira_addr;
    uint32_t                    irq_preference;
};

struct icmp {
    uint8_t                     icmp_type;
    uint8_t                     icmp_code;
    uint16_t                    icmp_cksum;
    union {
        uint8_t                 ih_pptr;
        struct in_addr          ih_gwaddr;
        struct ih_idseq {
            uint16_t            icd_id;
            uint16_t            icd_seq;
        } ih_idseq;
        uint32_t                ih_void;
        struct ih_pmtu {
            uint16_t            ipm_void;
            uint16_t            ipm_nextmtu;
        } ih_pmtu;
        struct ih_rtradv {
            uint8_t             irt_num_addrs;
            uint8_t             irt_wpa;
            uint16_t            irt_lifetime;
        } ih_rtradv;
    } icmp_hun;
#define icmp_pptr               icmp_hun.ih_pptr
#define icmp_gwaddr             icmp_hun.ih_gwaddr
#define icmp_id                 icmp_hun.ih_idseq.icd_id
#define icmp_seq                icmp_hun.ih_idseq.icd_seq
#define icmp_void               icmp_hun.ih_void
#define icmp_pmvoid             icmp_hun.ih_pmtu.ipm_void
#define icmp_nextmtu            icmp_hun.ih_pmtu.ipm_nextmtu
#define icmp_num_addrs          icmp_hun.ih_rtradv.irt_num_addrs
#define icmp_wpa                icmp_hun.ih_rtradv.irt_wpa
#define icmp_lifetime           icmp_hun.ih_rtradv.irt_lifetime

    union {
        struct {
            uint32_t            its_otime;
            uint32_t            its_rtime;
            uint32_t            its_ttime;
        } id_ts;
        struct {
            struct ip           idi_ip;
        } id_ip;
        struct icmp_ra_addr     id_radv;
        uint32_t                id_mask;
        uint8_t                 id_data[1];
    } icmp_dun;
#define icmp_otime              icmp_dun.id_ts.its_otime
#define icmp_rtime              icmp_dun.id_ts.its_rtime
#define icmp_ttime              icmp_dun.id_ts.its_ttime
#define icmp_ip                 icmp_dun.id_ip.idi_ip
#define icmp_radv               icmp_dun.id_radv
#define icmp_mask               icmp_dun.id_mask
#define icmp_data               icmp_dun.id_data
};

#define ICMP_MINLEN             8
#define ICMP_TSLEN              (8 + 3 * sizeof(uint32_t))
#define ICMP_MASKLEN            12
#define ICMP_ADVLENMIN          (8 + sizeof(struct ip) + 8)
#define ICMP_ADVLEN(__P)        (8 + ((__P)->icmp_ip.ip_hl << 2) + 8)

#define ICMP_UNREACH            3
#define ICMP_SOURCEQUENCH       4
#define ICMP_ROUTERADVERT       9
#define ICMP_ROUTERSOLICIT      10
#define ICMP_TIMXCEED           11
#define ICMP_PARAMPROB          12
#define ICMP_TSTAMP             13
#define ICMP_TSTAMPREPLY        14
#define ICMP_IREQ               15
#define ICMP_IREQREPLY          16
#define ICMP_MASKREQ            17
#define ICMP_MASKREPLY          18

#define ICMP_MAXTYPE            18

#define ICMP_UNREACH_NET                0
#define ICMP_UNREACH_HOST               1
#define ICMP_UNREACH_PROTOCOL           2
#define ICMP_UNREACH_PORT               3
#define ICMP_UNREACH_NEEDFRAG           4
#define ICMP_UNREACH_SRCFAIL            5
#define ICMP_UNREACH_NET_UNKNOWN        6
#define ICMP_UNREACH_HOST_UNKNOWN       7
#define ICMP_UNREACH_ISOLATED           8
#define ICMP_UNREACH_NET_PROHIB         9
#define ICMP_UNREACH_HOST_PROHIB        10
#define ICMP_UNREACH_TOSNET             11
#define ICMP_UNREACH_TOSHOST            12
#define ICMP_UNREACH_FILTER_PROHIB      13
#define ICMP_UNREACH_HOST_PRECEDENCE    14
#define ICMP_UNREACH_PRECEDENCE_CUTOFF  15

#define ICMP_REDIRECT_NET       0
#define ICMP_REDIRECT_HOST      1
#define ICMP_REDIRECT_TOSNET    2
#define ICMP_REDIRECT_TOSHOST   3

#define ICMP_TIMXCEED_INTRANS   0
#define ICMP_TIMXCEED_REASS     1

#define ICMP_PARAMPROB_OPTABSENT        1

#define ICMP_INFOTYPE(__TYPE)                                                   \
        (   (__TYPE) == ICMP_ECHOREPLY || (__TYPE) == ICMP_ECHO                 \
        ||  (__TYPE) == ICMP_ROUTERADVERT || (__TYPE) == ICMP_ROUTERSOLICIT     \
        ||  (__TYPE) == ICMP_TSTAMP || (__TYPE) == ICMP_TSTAMPREPLY             \
        ||  (__TYPE) == ICMP_IREQ || (__TYPE) == ICMP_IREQREPLY                 \
        ||  (__TYPE) == ICMP_MASKREQ || (__TYPE) == ICMP_MASKREPLY              \
        )

#ifdef __cplusplus
}
#endif

#endif
